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Self-administration and interviewer-administration of the German Chronic Respiratory Questionnaire: instrument development and assessment of validity and reliability in two randomised studies.
Puhan MA, Behnke M, Frey M, Grueter T, Brandli O, Lichtenschopf A, Guyatt GH, Schunemann HJ. Puhan MA, et al. Among authors: behnke m. Health Qual Life Outcomes. 2004 Jan 8;2:1. doi: 10.1186/1477-7525-2-1. Health Qual Life Outcomes. 2004. PMID: 14713317 Free PMC article. Clinical Trial.
339 results